Finding the Fourth Proportional to 457,874.44, 686,812.87 and 142,331.65
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Solution
The fourth proportional to 457,874.44, 686,812.87 and 142,331.65 is: 213,497.85
Step by Step Solution
- Step 1: Write the proportion equation
457,874.44 : 686,812.87 = 142,331.65 : x - Step 2: Convert to fraction form
457,874.44/686,812.87 = 142,331.65/x - Step 3: Cross multiply
457,874.44x = 686,812.87 × 142,331.65 - Step 4: Simplify right side
457,874.44x = 97,755,207,489.22 - Step 5: Solve for x
x = 97,755,207,489.22/457,874.44 - Step 6: Final answer
x = 213,497.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.